/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,

  * either express or implied. See the License for the specific language

  * governing permissions and limitations under the License.

  */

 package javax.faces.component;

 import javax.faces.context.FacesContext;

 import javax.faces.el.ValueBinding;

 /**

  * @author shot

  */

 public class UIGraphic extends UIComponentBase {

     public static final String COMPONENT_FAMILY = "javax.faces.Graphic";

     public static final String COMPONENT_TYPE = "javax.faces.Graphic";

     private static final String DEFAULT_RENDER_TYPE = "javax.faces.Image";

     private static final String VALUE_BINDING_NAME = "value";

     private static final String URL_BINDING_NAME = "url";

     private Object value = null;

     private boolean valueSet = false;

     public UIGraphic() {

         setRendererType(DEFAULT_RENDER_TYPE);

     }

     public String getFamily() {

         return COMPONENT_FAMILY;

     }

     public String getUrl() {

         return (String) getValue();

     }

     public void setUrl(String url) {

         setValue(url);

     }

     public Object getValue() {

         if (valueSet) {

             return value;

         }

         return ComponentUtil_.getValueBindingValue(this, VALUE_BINDING_NAME);

     }

     public void setValue(Object value) {

         this.value = value;

         valueSet = true;

     }

     public ValueBinding getValueBinding(String name) {

         return super.getValueBinding(convertAlias(name));

     }

     public void setValueBinding(String name, ValueBinding vb) {

         super.setValueBinding(convertAlias(name), vb);

     }

     private String convertAlias(String name) {

         if (URL_BINDING_NAME.equals(name)) {

             return VALUE_BINDING_NAME;

         }

         return name;

     }

     public void restoreState(FacesContext context, Object state) {

         Object[] values = (Object[]) state;

         super.restoreState(context, values[0]);

         value = values[1];

         valueSet = ((Boolean) values[2]).booleanValue();

     }

     public Object saveState(FacesContext context) {

         Object[] values = new Object[3];

         values[0] = super.saveState(context);

         values[1] = value;

         values[2] = (valueSet) ? Boolean.TRUE : Boolean.FALSE;

         return values;

     }

 }